Options:
-C, --nocolor Disable color output
-O, --use-old Use the old profile if one was selected.
-f, --force Make sure all config files are regenerated.
-P, --use-portage-chost Only set to given profile if its CHOST is the
same as that set for portage in /etc/make.conf
(or one of other portage config files...).
-c, --get-current-profile Print current used gcc profile.
-l, --list-profiles Print a list of available profiles.
-S, --split-profile Split profiles into their components
-E, --print-environ Print environment that can be used to setup the
current gcc profile, or a specified one.
-B, --get-bin-path Print path where binaries of the given/current
profile are located.
-L, --get-lib-path Print path where libraries of the given/current
profile are located.
-X, --get-stdcxx-incdir Print path where g++ include files of the
given/current profile are located.

Profile names are of the form: <CHOST>-<gcc version>
For example: i686-pc-linux-gnu-3.2.1